How about adding a category for the most useful HN web browser extensions such as HNRelevant? How about a category for the most useful HN lexical analysis tools, eg. https://hackernewstrends.com ? There are a lot of HN readers missing from your list like https://hackerer.news, https://hackernewstimes.com , https://thefrontpage.dev ? How about HN embeddings or visualizations, eg. https://tomthe.github.io/hackmap/?x=1499.5619140625001&y=-50... ?